Virtual Earth can now do 3-D maps and three cities are now available: San Francisco, Seattle, Boston and Atlanta. Microsoft is also providing a Virtual Earh API to allow developers to manipulate Virtual Earth.
Here the two lines required for "Hello World", Coding4Fun provides the entire snippet:
map = new VEMap('map');
map.LoadMap( new VELatLong(42.35822, -71.05309), 19, 'h', false,VEMapMode.Mode3D );